선박용 디젤엔진 연료분사펌프의 피로해석에 관한 연굼

Abstract

Engines for the purpose of merchant vessels are getting bigger and issued life and strength problems due to long-time exposure with high pressure of fuel injection pump to improve the output of engine. Also, even though considering enough strength or safety margin of product, there is lots of unexpected damage of failure in marine engines. This fatigue of material can infect to the most of damage and failure accident.

Fuel injection pump for the marine engines, which is installed the top of engine and directly exposed to vibration, should have enough durability against to the vibration.

Ironically, in comparison with the advanced shipbuilding industry in Korea, most of fuel injection pump is imported from other countries. It is needed to develop a design and production technology of fuel injection pump based on the reliability of material.

This study examines existing fatigue failure studies and finds a method to improve life and reliability of fuel injection pump by analyzing frequency resonance with vibration analysis of fatigue test by adjustment of pressure.

An analysis program "ANSYS" and sample fuel injection pump which is equipped on the MAN 5T23LH-4E, a four stroke cycle, medium speed marine diesel engine are used for this study.